Improvement in tools for cutting off pipes



HENRY COLLINSON.V Improve-ment inTools fo-'r Cutting Off Pipes. No.125,3,80.` Y 1 PatentdApri|9,1s72.

Witwe/gafas. v l 1721/192250 7a. wmf/4% t mw STATES PATENT OFFICE.

HENRY OOLLINSON, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN TOOLS FOR CUTTING OFF PIPES.

Specication of an Adjustable Tube or Pipe Cutter, invented by HENRY CoLLrNsoN, of Boston, Massachusetts. l

Ais the body ot the cutter, one vend forming a nut for the adjusting set-screw B and the other being recessed out to receive the Workin g parts otl the tool. Either cast on or attached to the body A is the crutch C, which is Inade larger at the top than at the bottom, for the. purpose ot' holding tubes or pipe of dierent sizes. B is an adjustable set-screw, having asmall swivel-crutch attached to and forming the end of it. E is the lever. F is the con- Eectinghnk. G is the cutter, having the `cutting points or edges formed in, any desirable shape or manner.- H is a small adjusting setscreW forming ra positive rest for the lever'E at any point; I do not consider this screw absolutely necessary in Working the tool, but it is better with it, as the depth of the cut can be adjusted with greater ncety b'y its use.

In operating with this cutter, the tube or pipe I is held in the vise in the usual manner. The point to be eut is then placed in the center ot' the crutch C, and the set-screw B turned down until the tube or pipe is firmly pressed by the swivel-crutch D. The cutter G can be leaving noburr either on the outside or the inside ot' the tube or pipe, and the friction of the crutches on the outside surface cleans it a-nd leaves it in good condition for receiving the screw-cutting tools.

Ola/im.

I claim- A pipe-cutter having the cutting-tool, the lever E, the liuk F, and the set-screw H cornbined, substantially as and for the purpose hereinbefore set forth.

HENRY COLLINSON. Witnesses:

N ATEANIEL HARErs, VWILLIAM W. MCKIM. 

